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At 2002-01-22 10:22 -0500, Elliotte Rusty Harold wrote:
>At 2:29 PM -0500 1/21/02, Clark C . Evans wrote:
>> This is a serialized entity.
>> This is a collection of documents which are
>> somehow related. A concrete implementation
>> of a class could be a namespace URI; but
>> not all namespace URIs are classes.
>This does not coincide with any of the customary meanings of the word
>"class" I'm familiar with. I suggest using a different word for this thing.
Quoting SGML ISO 8879-1986 Section 4.102:
Document Type: A class of documents having similar characteristics;
for example, journal, article, technical manual, or
Quoting SGML ISO 8879-1986 Section 4.105:
Document Type Definition: Rules, determined by an application, that apply
SGML to the markup of documents of a particular
This definition of DTD doesn't confer that Document Type is restricted to
only SGML, just that the DTD is the SGML way of looking at a Document Type
(i.e. a class of documents).
>>Questions for the model...
>> a. Can a Document belong to more than one Class?
>I think answering this question requires a clearer definition of "class".
>In fact, I think all the questions require a better understanding of the
>thing you're calling a class.
Going back to the roots of document markup, I think the term is very
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